501454640 has 20 divisors (see below), whose sum is σ = 1165882224. Its totient is φ = 200581824.

The previous prime is 501454637. The next prime is 501454643. The reversal of 501454640 is 46454105.

It is an interprime number because it is at equal distance from previous prime (501454637) and next prime (501454643).

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (501454643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134012 + ... + 3134171.

Almost surely, 2^501454640 is an apocalyptic number.

It is an amenable number.

501454640 is an abundant number, since it is smaller than the sum of its proper divisors (664427584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501454640 is a wasteful number, since it uses less digits than its factorization.

501454640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268196 (or 6268190 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 501454640 is about 22393.1828912283. The cubic root of 501454640 is about 794.4694797869.

The spelling of 501454640 in words is "five hundred one million, four hundred fifty-four thousand, six hundred forty".